Fatty acids and fatty alcohols are both types of lipids, which are molecules that make up the cell membranes of living organisms. Fatty acids are composed of a carboxyl group attached to a hydrocarbon chain, while fatty alcohols are composed of an alcohol group attached to a hydrocarbon chain. Common uses of fatty acids include as an emulsifier in food products, as a surfactant in cleaning products, and in the manufacture of soaps and cosmetics. Common uses of fatty alcohols include as a lubricant and lubricity additive, as a thickening or gelling agent in foods and personal care products, and as a surfactant and emulsifier in industrial products.
When rubber is exposed to fatty acids or fatty alcohols, it can cause the rubber to swell, become brittle, and crack. This can result in a decrease in the rubber's mechanical strength and resilience, leading to premature failure and reduced service life. Additionally, the swelling of the rubber can cause it to swell away from seals and gaskets, leading to leaks.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
View some of our other material compatibility ratings with FATTY ALCOHOL. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide